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Treating system and method for treating surface water worse than Grade V into drinking water

A domestic drinking water and treatment system technology, applied in the field of water supply treatment, can solve the problems of low removal of low molecular weight organic matter and failure to meet the standard of domestic drinking water, etc., and achieve the effects of easy automatic control, compact structure and short process flow

Inactive Publication Date: 2010-11-24
BEIJING YIPU INT WATER AFFAIRS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organic matter removed by this existing treatment process is mainly the part with a molecular weight greater than 10,000, and has little effect on the removal of low molecular weight organic matter
For heavily polluted surface water, the effluent cannot meet the standard of drinking water after being treated by the above-mentioned conventional water purification process.

Method used

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  • Treating system and method for treating surface water worse than Grade V into drinking water
  • Treating system and method for treating surface water worse than Grade V into drinking water
  • Treating system and method for treating surface water worse than Grade V into drinking water

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Embodiment 1

[0022] This embodiment provides a treatment system for treating inferior V-class surface water into domestic drinking water, which is a water supply treatment system that combines biological treatment methods, physicochemical methods and membrane methods, such as figure 1 As shown, the system includes:

[0023] Biological aerated filter 1, high-speed clarifier 2, blast system 5, ultrafiltration membrane unit 3, dosing system 6 and contact disinfection tank 4;

[0024] Wherein, the biological aerated filter 1 is sequentially connected with the high-speed clarifier 2, the ultrafiltration membrane unit 3 and the contact disinfection tank 4; wherein, the water inlet of the biological aerated filter 1 is used as the inferior V class surface water introduced for treatment Import A; the water outlet D of the contact disinfection tank is used as the water outlet of the treated up-to-standard water;

[0025] The air output port of the blast system 5 is connected to the air inlet of th...

Embodiment 2

[0036] This embodiment provides a treatment method for treating inferior V-class surface water into domestic drinking water. This method mainly uses the treatment system given in the first embodiment above to process inferior V-class surface water to obtain domestic drinking water. include:

[0037] Adopt the processing system that embodiment one provides;

[0038] Processing flow such as Figure 4 As shown, the treated inferior V-class surface water enters the biological aerated filter, and the water distribution and gas distribution at the bottom of the biological aerated filter, as well as the ceramsite filter material and microorganisms (microorganisms can be added activated sludge at the beginning of operation) The microorganisms contained in the water, which can then use the organic pollutants in the water to reproduce) act on the treated water to initially remove the organic pollutants and SS and inorganic substances such as ammonia nitrogen, nitrate, nitrite, iron and m...

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Abstract

The invention discloses a treating system and a method for treating surface water worse than Grade V into drinking water, belonging to the feedwater treatment field. The system comprises an aerating biological filter tank, a high-speed clarifying tank, a blower system, an ultrafilter, a medicating system and a contact disinfecting tank, wherein water and air are distributed to the bottom of the aerating biological filter tank, and organic pollutants, SS and inorganic substances such as ammonia nitrogen, nitrates, nitrites, iron, manganese and the like are preliminarily removed from the water; the outlet water from the filter tank flows into the high-speed clarifying tank, and coagulant and coagulant aids are added to remove suspended substances, chroma, phosphorus and part of organic substances; the outlet water from the clarifying tank flows into the ultrafilter unit, and suspended substances, colloids and bacteria can be effectively removed by using an immersed hollow fiber membrane assembly; and the outlet water from the ultrafilter flows into the contact disinfecting tank, ozone is introduced for disinfection, and the outlet water from the contact disinfecting tank flows into a water supply network. The system can treat the surface water worse than Grade V into the drinking water at present, and is of far reaching importance under the condition that surface water of Grade I, II and III as untreated water of tap water is decreased day by day in China.

Description

technical field [0001] The invention relates to the technical field of water supply treatment, in particular to a treatment system and method for treating inferior V-class surface water into domestic drinking water. Background technique [0002] At present, surface water pollution in my country is common, especially in rivers flowing through cities with serious organic pollution, and the problem of eutrophication in lakes is prominent. Surface water sources of types I, II, and III that can be used as tap water sources are decreasing day by day; many urban water plants have The surface water that can be used is often IV, V surface water or even surface water with worse water quality. The conventional tap water treatment process of "dosing coagulation-sedimentation-filtration-disinfection" mainly treats suspended solids and colloidal impurities in water, and at the same time has a certain removal effect on certain organic substances, bacteria and viruses in water. However, the...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/44C02F1/78C02F1/50
Inventor 高宇学张宝林郅海威王凯杨晨
Owner BEIJING YIPU INT WATER AFFAIRS
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